have about 94k on my 2013 3.5; like others mentioned, the timing chain rattle on startup can be a problem, mine does it very randomly, never consistent, and I cant exercise my warranty due to it not being consistent.
Spark plug changes should be changed more often (50-60k miles) as the boosted engines stress them out faster, luckily these are easily accessible.
all in all I really like mine while pulling our 4500lb camper, still get 9mpgs though (6 speed and 3.31 gears).
Now for the FvRvC
I had thought about trading it in for a ram or a chev so I didnt have to deal with the timing chain mess, but a shop owner I’ve brought my truck to said the chevs have their active fuel management issues while the Rams with the Hemis have their motor noise issues from the lift rollers wearing out. so long story short, they all have their issues